Daniel Defense MK18 DDM4 Pistol 5.56 NATO, 10.3 inch, RIS II Quad Rail, Geissele SSA Combat Flat Trigger, SureFire Warcomp
This Daniel Defense MK18 DDM4 Pistol stands out with a factory-marked MK18 upper, a 10.3 inch cold hammer forged, chrome-lined barrel, and the proven MK18 RIS II quad rail. It is upgraded with a SureFire Warcomp muzzle device and a Geissele SSA Combat flat-face trigger, delivering premium components where they matter. The setup includes an ambidextrous charging handle with extended latches and an SB Tactical pistol stabilizing brace.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.
Specific Condition Notes: This firearm shows signs of wear and handling, with visible scratches and blemishes.
What’s Included
- Hard case
- Daniel Defense DDM4/DD5 Firearms manual
- 1x 30-round Mission First Tactical (MFT) polymer STANAG-pattern magazine
- Ladder-style Picatinny rail covers (installed)
- Ambidextrous charging handle (installed)
- Pronged muzzle device (installed)
Built on the AR-15 platform and made in the USA, this MK18 pistol pairs 7075-T6 aluminum receivers with a Type III hardcoat anodized black finish. The upper is marked "MK18" and the caliber is marked "5.56." It includes a forward assist, dust cover, and brass deflector, along with a full-length Picatinny top rail featuring T-markings and side L-markings.
The 10.3 inch barrel is chrome-moly-vanadium steel, cold hammer forged, chrome-lined, and government profile. It uses a carbine-length gas system and is threaded 1/2x28 TPI with a 1:7 twist. A SureFire Warcomp muzzle device is installed.
The Daniel Defense MK18 RIS II quad rail is 6061-T6 aluminum and measures 9.55 inches. The rail is engraved with U.S. PAT. NO. 7,716,865, CAGE Code 3E3E2, and P/N DD-8020-BK.
Ladder-style Picatinny rail covers are installed for additional grip and protection.
Upgrades include a Geissele SSA Combat flat-face trigger and an ambidextrous charging handle with enlarged latches. The pistol is equipped with an SB Tactical pistol stabilizing brace and a textured polymer pistol grip. Capacity is 30+1, and one MFT polymer STANAG-pattern magazine is included.




